Article intéressant qui décrit les effets "de bords" entre le fork Bitcoin le réseau régulier Bitcoin.
https://medium.com/@freetrade68/the-bitcoin-cash-flippening-is-coming-faster-than-you-expect-3fb75fa61138

Même si la conclusion ne me plaît pas trop, il faut comprendre que le fork Bitcoin n'a plus les mêmes contraintes techniques que l'actuel Bitcoin bien plus encadré en terme d'évolution et donc planifiable facilement en investissement.

L'article soulève quand même un point intéressant qui est qu'on va donc voir dans les semaines qui suivent ... qui sont les mineurs professionnels et quel est leur poids sur la vitesse du réseau Bitcoin actuel.

Et moi de rire à combien va aller (en poids) la blockchain du fork Bitcoin à la fin de l'année ... 

(je rappelle qu'on ne peut pas miner sur Bitcoin sans un noeud complet sauf si on veut se payer les frais d'une Pool évidemment ... avec les temps de latences et les bizarreries qui en découlent).

ça monte très vite, tout ça ...

https://coinmarketcap.com/currencies/bitcoin/
https://www.cia.gov/library/publications/the-world-factbook/rankorder/2215rank.html

Source : http://www.zerohedge.com/news/2017-07-31/crypto-veteran-explains-bitcoins-software-update-and-recent-price-moves

Miners could be liars. They’ve proven that in the past when they have signaled falsely. So you get all types of Machiavellian games. But it does appear that we’ve gotten consensus.

People are starting to signal they are going for SegWit and people are relying on that. It’s really not in the miners’ best interest to disrupt this process any more than they already have. They stand to lose the most amount of money because they’re the only ones who have to actively choose which fork to follow, and that has the economic consequences.

Everybody else can just sit and hold and see how it plays out but doesn’t have to make an economic choice.

Simple article to introduce the Network Bitcoin Evolution to others parties.

Interesting development : http://www.zerohedge.com/news/2017-07-31/patrick-byrne-why-cryptocurrencies-matter

So, on December 19th, 2013, a journalist interviewed me. Near the end of the interview, she asked, “Are you ever going to accept Bitcoin?” And, at the time I thought in maybe a year and a half I’d get around to doing it, so I said, “Yeah, I hope someday that we'll do that.” She put that in her article, and I started getting Google alerts from newspapers in Thailand, in South Korea, in Africa. I mean, that little mention got picked up all over the world. And I realized, Geez, there’s a subculture around the world who is waiting for this.

 

So on January 1st, 2014, we started working on it. We put 40 guys in a room, sliding pizzas under the door so they could work day and night. And, by January 9th, we got Bitcoin up. As soon as we announced it, it became global news. At that point I realized that the world was ready for this earlier than I had expected it to be.

Bitcoin and other cryptocurrencies are a form of money that's a stable field that the government can’t destroy and can’t distort.
Because its creation is governed by the laws of mathematics.

It can’t happen any faster or slower than a certain rate, and it all sort of self-adjusts. What that means is -- unlike Janet Yellen, who can sign something and whisk 85 billion new U.S. dollars into existence -- there’s nothing she can sign that will whisk new Bitcoin into existence.

So, cryptocurrencies in general give us a stable medium through which we can communicate our information about values and prices in a way that no government mandarin can distort or usurp.

Source : http://blog.wizsec.jp/2017/07/breaking-open-mtgox-1.html

As some coins were deposited back to MtGox, we could identify which accounts were used to receive them; two in particular were of interest, and were possible to link to the online identity "WME". (Clusters who directly used these MtGox accounts are highlighted in red.) WME has been active since a long time back, often advertising "cheap coins" on the BitcoinTalk forums and wanting to trade exchange money codes. BTC-e publicly vouched for him, saying that "[we] know WME very well".

WME was involved with an incident involving stolen Bitcoinica funds (visible in the graph above), which provided yet another strong indicator that we had identified the right man, seemingly the main money launderer behind the MtGox heist. This incident also ended up revealing the name "Alexander Vinnik", though we didn't at the time think it was his real name, having seen many aliases. Today's arrest suggests it was real after all

To be clear, this investigation turned up evidence to identify Vinnik not as a hacker/thief but as a money launderer; his arrest news also suggests this is what he is being suspected for. He may have merely bought cheap coins from thieves and offered a laundering service. He is, however, a crucial piece of the puzzle, as he will have likely known who he was dealing with and laundering for, and so represents a major breakthrough in the case. We assume that law enforcement will now be taking the appropriate next steps to pursue all the remaining angles and hopefully identify the other individuals involved as well.

L'article contient un SVG, schéma suivant pas-à-pas les mouvements des fonds volés.
Très instructif.

Source : http://www.zerohedge.com/news/2017-07-22/pippa-malmgren-talks-bitcoin-refugee-crisis-and-plunge-protection-team

On The Rise Of Blockchain and Cryptocurrencies and The Fall Of Dollar Hegemony

Moving on, Townsend took the conversation in a direction that he said might be outside of Malmgren’s comfort zone: The rise of cryptocurrency’s like bitcoin.

Contrary to his expectations, Malmgren said she’s been closely following the increasing use of cryptocurrencies, adding that they will likely play a role in determining who dominates the global economy, and therefore determines the monetary framework, after precipitating the next big paradigm shift, which will lead the world away from the dollar-based framework that exists today.

Governments like China and Russia, which are seeking to create their own digital currencies, pose a greater threat to the long-term dominance of the dollar than they, or the US, realize.

[23 of last 100 blocks have unexpected version]

And it's begin ... at the end of every lines = 23 of last 100 blocks have unexpected version

Code:

2017-07-17 15:37:02 UpdateTip: new best=000000000000000000eac4304c025e2e0edfab5ac1f95d92cc17b11dd1da4e6e height=476233 version=0x20000010 log2_work=86.774567 tx=239865845 date='2017-07-17 15:33:54' progress=0.999997 cache=12.8MiB(7346tx) warning='23 of last 100 blocks have unexpected version'
2017-07-17 15:38:40 UpdateTip: new best=000000000000000000a99a7552d7ffd6a71bdfaba785981e3fd9538a332b05d5 height=476234 version=0x20000010 log2_work=86.774605 tx=239867248 date='2017-07-17 15:35:33' progress=0.999998 cache=17.2MiB(13446tx) warning='24 of last 100 blocks have unexpected version'
2017-07-17 15:44:01 UpdateTip: new best=0000000000000000008e1c1a36928f1c6947ac10cebfef0c0808429ab48486af height=476235 version=0x20000010 log2_work=86.774643 tx=239868792 date='2017-07-17 15:41:08' progress=0.999998 cache=37.3MiB(20991tx) warning='25 of last 100 blocks have unexpected version'
2017-07-17 15:55:30 UpdateTip: new best=0000000000000000001f30d0e8e895779b4d449295af78e9704b064aa6d9568a height=476236 version=0x20000010 log2_work=86.77468 tx=239870470 date='2017-07-17 15:52:46' progress=0.999998 cache=54.8MiB(32011tx) warning='26 of last 100 blocks have unexpected version'
2017-07-17 15:56:07 UpdateTip: new best=00000000000000000060221da0de65efda8ba3011d05bd3dc538f9f65aa7e44d height=476237 version=0x20000010 log2_work=86.774718 tx=239871416 date='2017-07-17 15:53:21' progress=0.999998 cache=54.8MiB(33757tx) warning='27 of last 100 blocks have unexpected version'
2017-07-17 16:18:14 UpdateTip: new best=00000000000000000029b42b869de88c4ea4241191eba2b4bd384487599ee79c height=476238 version=0x20000010 log2_work=86.774756 tx=239873267 date='2017-07-17 16:15:52' progress=0.999998 cache=75.2MiB(48503tx) warning='28 of last 100 blocks have unexpected version'
2017-07-17 16:18:41 UpdateTip: new best=00000000000000000142552e056c59d9a87d72d05df167727fc25691e6f15591 height=476239 version=0x20000010 log2_work=86.774793 tx=239874599 date='2017-07-17 16:16:05' progress=0.999998 cache=75.7MiB(49963tx) warning='29 of last 100 blocks have unexpected version'
2017-07-17 16:21:04 UpdateTip: new best=0000000000000000009ba7049cb17491e2ddf320319786e8c3586d932dcb9cae height=476240 version=0x20000010 log2_work=86.774831 tx=239876127 date='2017-07-17 16:18:14' progress=0.999998 cache=77.3MiB(52935tx) warning='30 of last 100 blocks have unexpected version'

Explication : https://medium.com/@SDWouters/why-schnorr-signatures-will-help-solve-2-of-bitcoins-biggest-problems-today-9b7718e7861c

1er problème rêglé par cet outil : la taille des transactions qui proviennent du couplage de plusieurs sommes stockées.

All this signature data increases the transaction size, and thus the transaction fee that is paid to the miners with it. You are claiming space that could be used for other transactions, which means you must pay to take their place.

At the end of the day, if it is just one person sending that transaction from multiple sources, there should be some way to do so with just one signature, right? This is what Schnorr signatures allow us to do.
One transaction has one signature

Estimates are that this upgrade would reduce the use of storage and bandwidth by at least 25%. To point out the obvious: that is a huge efficiency gain.

2ème problème ciblé : le SPAM de la MEMpool.

To push people into increasing the blocksize, the attackers made it expensive to send bitcoin transactions for weeks in a row, by using up as much transaction space as possible through all kinds of constructions.

One of their methods was to include dozens of signatures in transactions by constantly sending transactions from many sources.

[...]

Fortunately for us, Schnorr signatures would help combat this kind of spam attack.

If we only have one signature per transaction, more transactions will fit into blocks and a spammer would need to send far more transactions in competition with more people, and thus likely spend more money to take up the same transaction space. Signatures are often the largest individual part of a transaction, so the attacker would be disadvantaged.

Source : https://bravenewcoin.com/news/fourth-largest-bitcoin-exchange-bithumb-hacked-for-billions-of-won/

La plateforme d'échange représente 75% du volume dans le pays cité.
Elle génère 10% du flux d'échange mondial d'échange en bitcoins.

Soit 13 000 BTC par jour.

L'attaque a été réalisée sur un PC de l'office s'occupant du marketing.
Il stockait une partie de la base client (3% soit 31 000 clients) pour des usages statistiques et de profilage.

Le PC a été hackée et la base volée.
Les pirates ont, ensuite, créé un site de phishing et appelé (oui, par téléphone) quelques clients au hasard pour les piéger.

Les pirates ont aussi utilisé des scripts (automatisés donc) pour tester les identifiants avec des mots de passes standards (1234567890, abcdef, password, january, 1950, etcs ...).

---

Stocker des bitcoins sur une plateforme d'échange est appelé "Wallet VIRTUEL".
Il est important de ne pas faire cela ... même si les frais de rappatriement paraissent ... élevés.

Ils sont ridicules fasse à un vol pur et simple.

Source : http://www.zerohedge.com/news/2017-07-03/nasdaq-triggers-market-wide-circuit-breaker-amzn-crashes-87-after-hours

On the eve of the US Independence Day holiday and in after-hours trading, The FT reports that market data show that companies such as Apple, Amazon, Microsoft, eBay and Zynga were repriced at $123.47.

The Bloomberg data terminal listed either “market wide circuit breaker halt — level 2” or “volatility trading pause” on all the stocks affected.

Crash Ahead, this is a test.

Trop fort ... par contre, il ne montre que la partie "ALTS" en vidéo (carte graphique).

https://bitcointalk.org/index.php?topic=1998393.0

Et c'est bien 1 millions d'euros de facture d'électricité par mois.

Source : https://www.youtube.com/watch?v=SJgWqbZBn6I

OK, it's huge ...

Hello,

After the Segwit activation ... can developpers have think about a other (new) system to store and create the local blockchain for full node ?

For the actual size of 142Go, i mean.
I don't want prune my full node.

[Self-Moderated]

Please, post graphics and others notes about prices of Bitcoin, crashes of exchanges (yep ...it's true after all) and ... MEME/Gifs when we are in roller coaster mode (Max 1,5Mb).

This thread is Self-Moderated ( Samaritan God Mode = https://www.youtube.com/watch?v=xHAzhkIt0z4 ).



Previous and Linked Thread : https://bitcointalk.org/index.php?topic=178336.0

Rules :

1) Gifs/Meme allowed (please use "img width=300" to 600).
2) Multi-quote too long will be deleted (don't be lazy ... prune your quote).
3) ALTS are forbidden, use the right section for this (post will be deleted).
4) Gifs/Meme not linked to discussion will be deleted (be smart, play the game with others).
5) Links not related to subject will be deleted (OK, you see the goal ? The title of this thread !)

What's a wall thread ? Here is an explain :
http://www.investopedia.com/news/buy-and-sell-walls-cryptocurrencies-bitcoin-ethereum-ether-ripple/

Source : http://www.zerohedge.com/news/2017-06-27/investing-legend-calls-cryptocurrencies-biggest-bubble-lifetime-there-catch

Novogratz says cryptocurrencies could be worth north of $5 trillion in five years -- if the industry can come out of the shadows.

    "The Nasdaq got to $5.4 trillion in 1999, why couldn’t it be as big?" the former hedge fund manager said in an interview, referring the Nasdaq Composite Index.

    "There's so much human capital and real money being poured into the space and we’re at the takeoff point."

So, Bitcoin ... it's people.
Well, after all ... P2P network, it's people.

Bitcoin is a P2P network.

Source : https://medium.com/@elombrozo/why-i-support-bip148-4b4c0a9feb4d

Mining pool operators, and in particular, Jihan Wu and Micree Zhan agreed they would signal SegWit using BIP9 upon the release of the production-ready code which occurred later in the fall, after the third Scaling Bitcoin conference. However, soon after this meeting, Bitmain ceased responding to all my attempts at communication and instead began supporting a fork of the Bitcoin Core codebase that deliberately breaks with consensus rules.

Not being someone to give up so easily, I continued to attempt reestablishing communications. Finally, months later through the help of someone who had contacts in Bitmain, I was able to get in touch with Jihan Wu and arrange for a meeting with all the top mining pools which took place in Beijing in March. In my opening remarks I explicitly stated that I was not there to try to force any decisions on them — that it was entirely in their right to run whatever software they wanted, whether Bitcoin Core or something else. I was there to listen to their concerns and see if we might be able to find some common ground. I also made clear that nothing was to be signed. Any proposals would have to go through public scrutiny and review before any commitments could be made by anyone.

At first I was very optimistic that we had made good progress. And indeed, with a few of the miners present I did forge good bonds and made some great new friends. But almost immediately upon leaving, Jihan Wu reverted to his taunting tweets and bullying tactics. It was as if *nothing* had gotten through to him…he was only interested in playing his game.

Mining industries, government targuet ... or MMORPG ?

P2P war.

Source : https://bitcoinhardforkresearch.github.io/

This is the first of a series of BIPs describing my “spoonnet” experimental hardfork. Recently many bitcoin businesses expressed their requirements for supporting a hardfork proposal. While it is proven to be extremely difficult to obtain community-wide consensus, spoonnet fulfills all the commonly requested features, including deterministic activation logic, strong and simple 2-way replay protection, wipe-out protection, and predictable resources use. A few more BIPs are coming to describe these features.

The activation is purely based on flag day. Since it is very difficult to measure community consensus on-chain, this may only be done off-chain, and everyone switch to the new software when the vast majority agree. This is more a social issue than a technical one.

Interesting to read.
Technical view.

Linked source : https://medium.com/@elombrozo/why-i-support-bip148-4b4c0a9feb4d

[bullish exposure between 2,330 and no lower than 1,915."]

Source : http://www.zerohedge.com/news/2017-06-12/due-popular-demand-goldman-starts-covering-bitcoin

Well, if Fargo Wells don't accept ... Goldman will.
Business for all. 

In the report that Goldman released this afternoon ago, Jafaru concludes that "the balance of signals are looking broadly heavy" with the following view: "wary of a near-term top ahead of 3,134. Consider re-establishing bullish exposure between 2,330 and no lower than 1,915."

In other words, Goldman is bearish. Which probably means that bitcoin is set to make new all time highs shortly.

Source : https://www.cryptocoinsnews.com/4-reasons-bitcoin-not-bubble/

Bitcoin will someday be in a bubble, but that time is far away, Martin noted.

One benefit of cryptocurrencies is that they coexist with other forms of money used for transactions. Bitcoin is not in a bubble. Instead, people are using it to park their dollars so central banks cannot destroy their value.

Volatility will continue for bitcoin, as nothing moves in a straight line. Martin believes cryptocurrencies will trade along with sovereign currencies and eventually replace them.

He will not be convinced that the growth of bitcoin’s price has stalled until its market cap rivals that of the United States’ money supply, which is $13.5 trillion.

Source : http://www.zerohedge.com/news/2017-06-11/bitcoin-surges-above-3000-asian-premium-collapses

What makes this interesting to us is the fact that one of the reasons why bitcoin functions as a secondary medium of exchange is precisely the fact that it is considered “liquid”, i.e., that it can be exchanged for fiat currencies at any time at a reasonably small bid/ask spread.

We currently don’t believe that all bitcoin exchanges will be cut off from the fiat money system, but some sort of concerted attempt at suppression of these exchanges is clearly underway.

now, they fight ...

It may well be that Wells Fargo and other banks are merely concerned about potential regulatory issues if they continue to work with bitcoin exchanges – but why now all of a sudden and not before?

In any case, the issue is important in connection with the potential for bitcoin and other crypto currencies to become genuine media of exchange, i.e., money that is accepted widely for the final payment for other goods and services in the economy without reservations.